Re: ZSH_XTRACE_FILE (instead of ZSH

Re: ZSH_XTRACE_FILE (instead of ZSH_XTRACEFD)

X-seq: zsh-workers 54227

From: Charles Blake <charlechaud@xxxxxxxxx>

To: Mikael Magnusson <mikachu@xxxxxxxxx>

Cc: zsh-workers@xxxxxxx

Subject: Re: ZSH_XTRACE_FILE (instead of ZSH_XTRACEFD)

Date: Wed, 18 Mar 2026 11:08:22 -0400

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References: <CAKiz1a_OLEGqSGpQ9wsVW_rriO35uiRfMkJV=FaOLAywyC3-qQ@mail.gmail.com> <CAHYJk3R72BuyuSg57eC+46bQwEPBg+3V9+UO42GNQT__tiYcww@mail.gmail.com>

I don't think the shell shock analogy is accurate.  A valid use
case is `PS4=whatnot ZSH_XTRACE_FILE=/tmp/mylog zsh -x foo.zsh`
or similar.  The Src/init.c does a getsparam to detect the value
being something and then calls the setter through the usual
setsparam -> assignsparam chain for the effect of changing the
destination FILE* at shell start-up.  Maybe that could use a
comment.

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